Carlton Dequan Weekly-Williams (December 6, 1993 – August 4, 2020), known professionally as FBG Duck, was an American rapper and songwriter. He rose to prominence in the early 2010s in Chicago's drill
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d100371f85078780201d9fa0527583a0c59731373ce521a57ff5c746dd0da. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b03a4027-29fd-4ac7-b3c1-e0bdc4c46c66.json and https://artists.proofprofile.net/proofs/artist/b03a4027-29fd-4ac7-b3c1-e0bdc4c46c66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).